package com.wx_shop.api.util.wx.util;

import java.io.StringReader;
import java.io.StringWriter;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;

public class JaxbObjectAndXmlUtil
{ 
       
    /**
     * @param xmlStr 字符串
     * @param c 对象Class类型
     * @return 对象实例
     */
    @SuppressWarnings("unchecked")
    public static <T> T xml2Object(String xmlStr,Class<T> c)
    { 
        try
        { 
            JAXBContext context = JAXBContext.newInstance(c); 
            Unmarshaller unmarshaller = context.createUnmarshaller(); 
             
            T t = (T) unmarshaller.unmarshal(new StringReader(xmlStr)); 
             
            return t; 
             
        } catch (JAXBException e) {  e.printStackTrace();  return null; } 
         
    } 
       
    /**
     * @param object
     * @param jaxbFragment 是否需要头部编码
     * @return
     */
    public static String object2Xml(Object object, boolean jaxbFragment)
    { 
        try
        {   
            StringWriter writer = new StringWriter();
            JAXBContext context = JAXBContext.newInstance(object.getClass()); 
            Marshaller  marshal = context.createMarshaller();
             
            marshal.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); // 格式化输出 
            marshal.setProperty(Marshaller.JAXB_ENCODING, "UTF-8");// 编码格式,默认为utf-8 
            marshal.setProperty(Marshaller.JAXB_FRAGMENT, ! jaxbFragment);// 是否省略xml头信息 
            marshal.setProperty("jaxb.encoding", "utf-8"); 
            marshal.marshal(object,writer);
             
            return new String(writer.getBuffer());
             
        } catch (Exception e) { e.printStackTrace(); return null;}    
         
    } 
}